Home / 30,968.82-42,736.77-16,821.54

Finding the Fourth Proportional to 30,968.82, 42,736.77 and 16,821.54

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Solution

The fourth proportional to 30,968.82, 42,736.77 and 16,821.54 is: 23,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.82 : 42,736.77 = 16,821.54 : x
  2. Step 2: Convert to fraction form
    30,968.82/42,736.77 = 16,821.54/x
  3. Step 3: Cross multiply
    30,968.82x = 42,736.77 × 16,821.54
  4. Step 4: Simplify right side
    30,968.82x = 718,898,286.03
  5. Step 5: Solve for x
    x = 718,898,286.03/30,968.82
  6. Step 6: Final answer
    x = 23,213.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.